[tor-bugs] #13365 [Tor]: tor make coverage-html: lcov --capture errors out on "reached unexpected end of file"

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#13365: tor make coverage-html: lcov --capture errors out on "reached unexpected
end of file"
--------------------+----------------------------------
 Reporter:  teor    |          Owner:
     Type:  defect  |         Status:  new
 Priority:  normal  |      Milestone:
Component:  Tor     |        Version:  Tor: unspecified
 Keywords:          |  Actual Points:
Parent ID:          |         Points:
--------------------+----------------------------------
 When I run tor's make coverage-html on a recent git version, I get an
 error:

 Found 114 data files in .
 Processing common/src_common_libor_crypto_testing_a-aes.gcda
 geninfo: ERROR: ~/tor/tor-target/src/common
 /src_common_libor_crypto_testing_a-aes.gcno: reached unexpected end of
 file
 make: *** [coverage-html] Error 255

 The relevant files are:

 $ ls -l src/common/src_common_libor_crypto_testing_a-aes.*
 -rw-r--r--  1 ~  ~    520  9 Oct 01:57 src/common
 /src_common_libor_crypto_testing_a-aes.gcda
 -rw-r--r--  1 ~  ~   1764  9 Oct 01:55 src/common
 /src_common_libor_crypto_testing_a-aes.gcno
 -rw-r--r--  1 ~  ~  12828  9 Oct 01:55 src/common
 /src_common_libor_crypto_testing_a-aes.o

 This worked around August 30 with approximately the same build settings
 (I've tried several variations, none work.)

 I think I've updated my compiler (clang) since then, but I've tried both
 versions:
 Apple LLVM version 6.0 (clang-600.0.53) (based on LLVM 3.5svn)
 clang version 3.6.0 (trunk 216817)

 Maybe I'll need to update lcov:
 $ port list lcov
 lcov                           @1.11           devel/lcov

 Any hints for debugging this?
 (Sorry, Nick, I'm not going to be much help with chutney coverage until I
 get this solved.)

 The full output of the failed command is as follows:

 -----

 $ make coverage-html
 /*/usr/bin/make  all-am
 test -e "`which lcov`" || (echo "lcov must be installed. See
 <http://ltp.sourceforge.net/coverage/lcov.php>." && false)
 test -d "./coverage_html" || mkdir -p "./coverage_html"
 lcov --rc lcov_branch_coverage=1 --directory ./src --zerocounters
 Deleting all .da files in ./src and subdirectories
 Done.
 /*/usr/bin/make reset-gcov
 rm -f src/*/*.gcda
 /*/usr/bin/make check
 /*/usr/bin/make  check-TESTS check-local
 PASS: src/test/test
 /*/usr/bin/make  all-am
 ============================================================================
 Testsuite summary for tor 0.2.6.0-alpha-dev
 ============================================================================
 # TOTAL: 1
 # PASS:  1
 # SKIP:  0
 # XFAIL: 0
 # FAIL:  0
 # XPASS: 0
 # ERROR: 0
 ============================================================================
 python ./src/test/test_cmdline_args.py ./src/or/tor-cov "."
 ............
 ----------------------------------------------------------------------
 Ran 12 tests in 0.685s

 OK
 python ./src/test/ntor_ref.py test-tor
 OK
 python ./src/test/ntor_ref.py self-test
 OK
 ./src/test/test-bt-cl assert | python ./src/test/bt_test.py
 OK
 ./src/test/test-bt-cl crash | python ./src/test/bt_test.py
 OK
 lcov --capture --rc lcov_branch_coverage=1 --no-external --directory .
 --output-file "./coverage_html/lcov.tmp"
 Capturing coverage data from .
 Found gcov version: 4.9.1
 Scanning . for .gcda files ...
 Found 114 data files in .
 Processing common/src_common_libor_crypto_testing_a-aes.gcda
 geninfo: ERROR: ~/tor/tor-target/src/common
 /src_common_libor_crypto_testing_a-aes.gcno: reached unexpected end of
 file
 make: *** [coverage-html] Error 255

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13365>
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